[Openswan Users] VPN Connection failing after 1-2 minutes

[Alexandru Nedelcu]

Hi folks,

I’m trying to connect to an L2TP/IPSec VPN and the connection drops after
1-2 minutes of being connected. During those 1-2 minutes, the connection
does work. My colleagues that use OS X laptops don’t have problems. I’ve
ran out of ideas and thought to ask on this mailing list.

Here’s the software that I use:

   - Ubuntu 12.04
   - openswan 2.6.37
   - xl2tpd 1.3.1
   - l2tp-ipsec-vpn 1.0.9

The weird thing is that I'm not seeing a clear error in the logs. It just
stops. I activated debugging logs in syslog and here’s what I’m getting:

Jan 22 16:01:50  xl2tpd[10717]: last message repeated 3 times
Jan 22 16:01:50 frecmenta xl2tpd[10717]: network_thread: recv packet
from 80.149.159.132, size = 20, tunnel = 57583, call = 0 ref=0
refhim=0
Jan 22 16:01:50 frecmenta xl2tpd[10717]: handle_avps: handling avp's
for tunnel 57583, call 0
Jan 22 16:01:50 frecmenta xl2tpd[10717]: message_type_avp: message
type 6 (Hello)
Jan 22 16:01:50 frecmenta xl2tpd[10717]: control_finish: message type
is Hello(6).  Tunnel is 10488, call is 0.
Jan 22 16:01:55 frecmenta xl2tpd[10717]: network_thread: recv packet
from 80.149.159.132, size = 20, tunnel = 57583, call = 40673 ref=0
refhim=0

Jan 22 16:01:55 frecmenta pppd[10777]: rcvd [LCP EchoReq id=0x1
magic=0xa22708b6]
Jan 22 16:01:55 frecmenta pppd[10777]: sent [LCP EchoRep id=0x1
magic=0x82a8e6b4]
Jan 22 16:02:13 frecmenta xl2tpd[10717]: network_thread: recv packet
from 80.149.159.132, size = 20, tunnel = 57583, call = 40673 ref=0
refhim=0

Jan 22 16:02:13 frecmenta pppd[10777]: rcvd [LCP EchoReq id=0x2
magic=0xa22708b6]
Jan 22 16:02:13 frecmenta pppd[10777]: sent [LCP EchoRep id=0x2
magic=0x82a8e6b4]
Jan 22 16:02:19 frecmenta xl2tpd[10717]: network_thread: select timeout
Jan 22 16:02:19 frecmenta xl2tpd[10717]: network_thread: recv packet
from 80.149.159.132, size = 12, tunnel = 57583, call = 0 ref=0
refhim=0
Jan 22 16:02:20 frecmenta xl2tpd[10717]: network_thread: select timeout
Jan 22 16:02:20 frecmenta xl2tpd[10717]: network_thread: recv packet
from 80.149.159.132, size = 20, tunnel = 57583, call = 0 ref=0
refhim=0
Jan 22 16:02:20 frecmenta xl2tpd[10717]: handle_avps: handling avp's
for tunnel 57583, call 0
Jan 22 16:02:20 frecmenta xl2tpd[10717]: message_type_avp: message
type 6 (Hello)
Jan 22 16:02:20 frecmenta xl2tpd[10717]: control_finish: message type
is Hello(6).  Tunnel is 10488, call is 0.
Jan 22 16:02:31 frecmenta xl2tpd[10717]: network_thread: recv packet
from 80.149.159.132, size = 20, tunnel = 57583, call = 40673 ref=0
refhim=0

Jan 22 16:02:31 frecmenta pppd[10777]: rcvd [LCP EchoReq id=0x3
magic=0xa22708b6]
Jan 22 16:02:31 frecmenta pppd[10777]: sent [LCP EchoRep id=0x3
magic=0x82a8e6b4]

# <-- connection drops here

Jan 22 16:02:34 frecmenta L2tpIPsecVpnControlDaemon: Opening client connection
Jan 22 16:02:34 frecmenta L2tpIPsecVpnControlDaemon: Executing command
service xl2tpd stop
Jan 22 16:02:34 frecmenta xl2tpd[10717]: network_thread: select
returned error 4 (Interrupted system call)
Jan 22 16:02:34 frecmenta xl2tpd[10717]: death_handler: Fatal signal 15 received
Jan 22 16:02:34 frecmenta pppd[10777]: Hangup (SIGHUP)
Jan 22 16:02:34 frecmenta pppd[10777]: Modem hangup
 Jan 22 16:02:34 frecmenta L2tpIPsecVpnControlDaemon: Command service
xl2tpd stop finished with exit code 0
Jan 22 16:02:34 frecmenta pppd[10777]: Connect time 1.3 minutes.
Jan 22 16:02:34 frecmenta pppd[10777]: Sent 8172 bytes, received 28 bytes.
Jan 22 16:02:34 frecmenta pppd[10777]: Script /etc/ppp/ip-down started
(pid 10856)
Jan 22 16:02:34 frecmenta pppd[10777]: Connection terminated.
Jan 22 16:02:34 frecmenta avahi-daemon[613]: Withdrawing workstation
service for ppp0.
Jan 22 16:02:34 frecmenta NetworkManager[1079]:    SCPlugin-Ifupdown:
devices removed (path: /sys/devices/virtual/net/ppp0, iface: ppp0)
Jan 22 16:02:35 frecmenta pppd[10777]: Script /etc/ppp/ip-down
finished (pid 10856), status = 0x0
Jan 22 16:02:35 frecmenta pppd[10777]: Exit.
Jan 22 16:02:35 frecmenta L2tpIPsecVpnControlDaemon: Executing command
ipsec setup stop
Jan 22 16:02:35 frecmenta ipsec_setup: Stopping Openswan IPsec...
Jan 22 16:02:36 frecmenta kernel: [ 5640.279150] NET: Unregistered
protocol family 15
Jan 22 16:02:36 frecmenta ipsec_setup: ...Openswan IPsec stopped
Jan 22 16:02:36 frecmenta L2tpIPsecVpnControlDaemon: Command ipsec
setup stop finished with exit code 0
Jan 22 16:02:36 frecmenta L2tpIPsecVpnControlDaemon: Closing client connection


Any ideas?

Thanks,

-- 
Alexandru Nedelcu
www.bionicspirit.com

PGP Public Key:
https://bionicspirit.com/key.aexpk
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.openswan.org/pipermail/users/attachments/20140122/8c3ff722/attachment.html>